THE PROGRESSIVE SCIENCE SERIES 



CLIMATE 



Considered especially in Relation to Man 



By ROBERT DE COURCY WARD 



Assistant Professor of Climatology in Harvard University 



With Illustrations. 6s. net 



This work is based on lecture-notes prepared for the students of Harvard 

 University. Its aim is to co-ordinate and to set forth clearly and systema- 

 tically the hroader facts of climate in language as free as possible from 

 technicalities. At the same time the needs of the teacher and student have 

 been kept constantly in mind, and the subject-matter has been arranged in 

 such a way as seems best to adapt it for purposes of thorough study. 



CONTENTS 

 Introduction — The Climatic Zones and their Subdivisions — The Classification 

 of Climate — The Characteristics of the Zones — The Hygiene of the Zones — 

 The Life of Man in the Tropics ; in the Temperate Zones ; in the Polar 

 Zones — Changes of Climate — Index. 



RIVER DEVELOPMENT 



As illustrated by the Rivers of North America 

 By PROFESSOR I. C. RUSSELL 



With Illustrations. 65. net 



CONTENTS 

 To the Reader — The Disintegration and Decay of Rocks — Laws governing 

 the Streams — Influence of Inequalities in the Hardness of Rocks on River- 

 side Scenery — Materials carried by Streams in Suspension and in Solution 

 — Stream Deposits — Stream Terraces — Stream Development — Some of the 

 Characteristics of American Rivers — The Life-history of a River — Index. 





